Update bulkIndex and bulkUpdate in bulk.

In Elasticsearch, the bulk API can be used to perform batch indexing and batch updating operations.

To perform bulk indexing, you can submit index operations using the following format of the request body:

{ "index" : { "_index" : "my_index", "_id" : "1" } }
{ "field1" : "value1" }
{ "index" : { "_index" : "my_index", "_id" : "2" } }
{ "field1" : "value2" }
...

Each operation consists of two parts: operation type (index) and operation content (including index name, document ID, and document content). Multiple operations can be arranged sequentially in the request body.

For bulk updates, you can submit update operations using the following request body format.

{ "update" : { "_index" : "my_index", "_id" : "1" } }
{ "doc" : { "field1" : "new_value1" } }
{ "update" : { "_index" : "my_index", "_id" : "2" } }
{ "doc" : { "field1" : "new_value2" } }
...

Each operation consists of two parts: the operation type (update) and the operation content (including index name, document ID, and update content). Multiple operations can be arranged sequentially in the request body.

Using the bulk API allows you to submit these operations to Elasticsearch all at once, enhancing efficiency for indexing and updating. After executing the bulk operation, Elasticsearch will return a bulk response that includes the outcome of each operation.

Before performing batch operations, please ensure that the index already exists and that the correct index name and ID are specified in the request.